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-rw-r--r--generic/proof-menu.el1
1 files changed, 1 insertions, 0 deletions
diff --git a/generic/proof-menu.el b/generic/proof-menu.el
index b4ac2bf9..472f2f9e 100644
--- a/generic/proof-menu.el
+++ b/generic/proof-menu.el
@@ -104,6 +104,7 @@ without adjusting window layout."
(define-key map [(control meta e)] 'proof-goto-command-end)
(define-key map [(control c) (control b)] 'proof-process-buffer)
;; C-c C-c is proof-interrupt-process in universal-keys
+ (define-key map [(control c) (control d)] 'proof-tree-external-display-toggle)
;; C-c C-f is proof-find-theorems in universal-keys
(define-key map [(control c) (control H)] 'proof-help)
;; C-c C-l is proof-layout-windows in universal-keys